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NSR database version of May 19, 2024.

Search: Author = T.M.Semkow

Found 18 matches.

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2010SI30      Appl.Radiat.Isot. 68, 1459 (2010)

G.Sibbens, S.Pomme, T.Altzitzoglou, E.Garcia-Torano, H.Janssen, R.Dersch, O.Ott, A.Martin Sanchez, M.P.Rubio Montero, M.Loidl, N.Coron, P.de Marcillac, T.M.Semkow

Alpha-particle emission probabilities in the decay of 240Pu

RADIOACTIVITY 240Pu(α); measured decay products, Eα, Iα, Eγ, Iγ; deduced alpha emission probabilities. Comparison with available data.

doi: 10.1016/j.apradiso.2009.12.006
Citations: PlumX Metrics

2009SE07      Phys.Lett. B 675, 415 (2009)

T.M.Semkow, D.K.Haines, S.E.Beach, B.J.Kilpatrick, A.J.Khan, K.O'Brien

Oscillations in radioactive exponential decay

RADIOACTIVITY 226Ra(α); 32Si, 32P, 36Cl(β-); analyzed T1/2 data; calculated seasonal temperature variation.

doi: 10.1016/j.physletb.2009.04.051
Citations: PlumX Metrics

1995SE13      Appl.Radiat.Isot. 46, 341 (1995)


Statistical Deconvolution of Beta Spectra: Implications for neutrino mass detection

RADIOACTIVITY 35S(β-); calculated β spectra; deduced implications for 17 keV neutrino existence, detector characteristics role, Xe gas scintillation proportional detector design features. Monte Carlo simulation.

doi: 10.1016/0969-8043(95)00002-U
Citations: PlumX Metrics

1994GA15      Phys.Rev. C49, 3309 (1994)

G.Garcia Bermudez, C.Baktash, V.Abenante, H.C.Griffin, M.L.Halbert, D.C.Hensley, N.R.Johnson, I.Y.Lee, F.K.McGowan, M.A.Riley, D.G.Sarantites, T.M.Semkow, D.W.Stracener, A.Virtanen

High Spin States of 84Sr

NUCLEAR REACTIONS 52Cr(36S, 2n2p), E=130 MeV; measured Eγ, Iγ, γγ-coin. 84Sr deduced levels, J, π.

doi: 10.1103/PhysRevC.49.3309
Citations: PlumX Metrics

1994SE21      Nucl.Instrum.Methods Phys.Res. A353, 515 (1994)

T.M.Semkow, P.P.Parekh, C.D.Schwenker, R.Dansereau, J.S.Webber

Efficiency of the Lucas Scintillation Cell

RADIOACTIVITY 222Rn, 210,214,218Po(α); measured α counting efficiencies. Lucas scintillation cell.

doi: 10.1016/0168-9002(94)91712-4
Citations: PlumX Metrics

1991BA12      Phys.Lett. 255B, 174 (1991)

C.Baktash, G.Garcia-Bermudez, D.G.Sarantites, W.Nazarewicz, V.Abenante, J.R.Beene, H.C.Griffin, M.L.Halbert, D.C.Hensley, N.R.Johnson, I.Y.Lee, F.K.McGowan, M.A.Riley, D.W.Stracener, T.M.Semkow, A.Virtanen

Shape Coexistence and Disappearance of Pairing Correlations in 82Sr

NUCLEAR REACTIONS 52Cr(34S, 2n2p), E=130 MeV; measured γγ-coin. 82Sr deduced levels, J, π, band structure, shape features. Woods-Saxon cranking calculations.

doi: 10.1016/0370-2693(91)90232-F
Citations: PlumX Metrics

1991CH02      Phys.Rev. C43, 652 (1991)

A.Chbihi, L.G.Sobotka, Z.Majka, D.G.Sarantites, D.W.Stracener, V.Abenante, T.M.Semkow, N.G.Nicolis, D.C.Hensley, J.R.Beene, M.L.Halbert

Yield Decomposition and Excitation Energy Reconstruction in an Incomplete Fusion Reaction

NUCLEAR REACTIONS 100Mo(28Si, X), E=701 MeV; measured charged particle multiplicities, σ(θ1, E1) for p, α, d; deduced compoundlike system excitation energy vs residue velocity, incomplete fusion.

doi: 10.1103/PhysRevC.43.652
Citations: PlumX Metrics

1990NI04      Phys.Rev. C41, 2118 (1990)

N.G.Nicolis, D.G.Sarantites, L.A.Adler, F.A.Dilmanian, K.Honkanen, Z.Majka, L.G.Sobotka, Z.Li, T.M.Semkow, J.R.Beene, M.L.Halbert, D.C.Hensley, J.B.Natowitz, R.P.Schmitt, D.Fabris, G.Nebbia, G.Mouchaty

Deformation Effects in the Compound Nucleus Decay using the Spin-Alignment Method

NUCLEAR REACTIONS 65Cu(45Sc, X), E=200 MeV; 50Ti(64Ni, X), E=250 MeV; 74Ge(64Ni, X), E=270 MeV; 100Mo(64Ni, X), E=270 MeV; 150Nd(20Ne, X), E=176.6 MeV; measured σ(θα); deduced statistical model parameters. Spin-alignment method.

doi: 10.1103/PhysRevC.41.2118
Citations: PlumX Metrics

1990NI10      Nucl.Phys. A520, 153c (1990)

N.G.Nicolis, D.G.Sarantites, C.Baktash, V.Abenante, L.A.Adler, J.R.Beene, F.A.Dilmanian, G.Garcia-Bermudez, H.C.Griffin, M.L.Halbert, D.C.Hensley, N.R.Johnson, I.Y.Lee, Z.Majka, F.K.McGowan, M.A.Riley, T.M.Semkow, D.W.Stracener, A.Virtanen

Alpha-Particle Emission as a Probe of Nuclear Shapes and Structure Effects in Proton Evaporation Spectra

NUCLEAR REACTIONS 52Cr(34S, 2n2p), E=130 MeV; measured pγ-coin, proton spectra. 105Pd(32S, 2n2p), E=155 MeV; analyzed data; deduced shape, structure effects role.

doi: 10.1016/0375-9474(90)91143-F
Citations: PlumX Metrics

1990SA13      Phys.Rev.Lett. 64, 2129 (1990)

D.G.Sarantites, C.Baktash, N.G.Nicolis, G.Garcia-Bermudez, V.Abenante, J.R.Beene, N.R.Johnson, M.L.Halbert, D.C.Hensley, F.K.McGowan, H.C.Griffin, I.Y.Lee, Z.Majka, M.A.Riley, T.M.Semkow, D.W.Stracener, A.Virtanen

Nuclear-Structure Effects in Proton Evaporation Spectra

NUCLEAR REACTIONS 52Cr(34S, 2n2p), E=130 MeV; measured pγ-coin, proton spectra, pγ(θ). 82Sr deduced rotational band role in proton evaporation spectra.

doi: 10.1103/PhysRevLett.64.2129
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1990SE08      Nucl.Instrum.Methods Phys.Res. A290, 437 (1990)

T.M.Semkow, G.Mehmood, P.P.Parekh, M.Virgil

Coincidence Summing in Gamma-Ray Spectroscopy

RADIOACTIVITY 241Am, 109Cd, 57Co, 139Ce, 203Hg, 113Sn, 85Sr, 137Cs, 88Y, 60Co; 154,155Eu, 125Sb; measured Eγ, standard sources; deduced coincidence summing corrections.

doi: 10.1016/0168-9002(90)90561-J
Citations: PlumX Metrics

1989HA34      Phys.Rev. C40, 2558 (1989)

M.L.Halbert, J.R.Beene, D.C.Hensley, K.Honkanen, T.M.Semkow, V.Abenante, D.G.Sarantites, Z.Li

Angular Momentum Effects in Subbarrier Fusion of 64Ni + 100Mo

NUCLEAR REACTIONS 100Mo(64Ni, xn), E=210-235 MeV; 148Sm(16O, xn), E=71, 81 MeV; measured σ(E), γ-multiplicity. 164Yb deduced spin distributions, (9/2)- level branching.

doi: 10.1103/PhysRevC.40.2558
Citations: PlumX Metrics

1989MA45      Phys.Rev. C40, 2124 (1989)

Z.Majka, V.Abenante, Z.Li, N.G.Nicolis, D.G.Sarantites, T.M.Semkow, L.G.Sobotka, D.W.Stracener, J.R.Beene, D.C.Hensley, H.C.Griffin

Target Excitation and Angular Momentum Transfer in Reactions of E/A = 11.9 MeV 28Si with 181Ta from 4π Charged Particle, Neutron, and γ-Ray Multiplicity Measurements

NUCLEAR REACTIONS 181Ta(28Si, X), E=333 MeV; measured (particle)(particle)-coin, particle multiplicities; deduced target-like fragment excitation, angular momentum transfer mechanisms.

doi: 10.1103/PhysRevC.40.2124
Citations: PlumX Metrics

1988SE01      Phys.Rev. C37, 169 (1988)

T.M.Semkow, D.G.Sarantites, K.Honkanen, Z.Li, M.Ross, J.R.Beene, M.L.Halbert, D.C.Hensley

Excitation Energy Division in the Quasielastic Region from Reactions of 12 MeV/Nucleon 48Ti with 150Nd

NUCLEAR REACTIONS 150Nd(48Ti, X), E=581 MeV; measured γ(fragment)-coin; deduced mass to charge equilibration characteristics. Si telescopes, Ge detectors, spin spectrometer.

doi: 10.1103/PhysRevC.37.169
Citations: PlumX Metrics

1986SE07      Phys.Rev. C34, 523 (1986)

T.M.Semkow, D.G.Sarantites, K.Honkanen, V.Abenante, L.A.Adler, C.Baktash, N.R.Johnson, I.Y.Lee, M.Oshima, Y.Schutz, Y.S.Chen, J.X.Saladin, C.Y.Chen, O.Dietzsch, A.J.Larabee, L.L.Riedinger, H.C.Griffin

Spectroscopic Study of the High-Spin States in 135Pr

NUCLEAR STRUCTURE 135Pr; calculated levels, alignments, crossing frequencies. Cranked shell model.

NUCLEAR REACTIONS 120Sn(19F, 4n), E=91 MeV; measured Eγ, Iγ, γγ(θ). 135Pr deduced levels, J, π, alignments, crossing frequencies, signature splittings, γ-deformation parameter. Cranked shell model comparison.

doi: 10.1103/PhysRevC.34.523
Citations: PlumX Metrics

1985GU15      Phys.Lett. 163B, 79 (1985)

M.W.Guidry, S.Juutinen, X.T.Liu, C.R.Bingham, A.J.Larabee, L.L.Riedinger, C.Baktash, I.Y.Lee, M.L.Halbert, D.Cline, B.Kotlinski, W.J.Kernan, T.M.Semkow, D.G.Sarantites, K.Honkanen, M.Rajagopalan

Population of High Spin States in Transfer Reactions with very Heavy Ions

NUCLEAR REACTIONS 161Dy(58Ni, 59Ni), E=270 MeV; measured (particle)(particle)γ-coin; deduced reaction mechanism. 160Dy deduced levels, J, π, yrast sequence.

doi: 10.1016/0370-2693(85)90196-0
Citations: PlumX Metrics

1985RO09      Phys.Rev. C31, 1334 (1985)

L.Robinson, A.C.Wahl, T.M.Semkow, A.E.Norris

Nuclear-Charge Distribution for A = 121 from Thermal-Neutron-Induced Fission of 235U

NUCLEAR REACTIONS 235U(n, F), E=thermal; measured fractional independent fission yields of 121Cd, 121In, 121Sn, fractional cumulative yields of 121Ag; deduced charge, dispersion parameters for A=121, proton shell effects. Radiochemical techniques.

doi: 10.1103/PhysRevC.31.1334
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset12931.

1984SE18      Phys.Rev. C30, 1966 (1984)

T.M.Semkow, A.C.Wahl, L.Robinson

Yields of In and Sn Products from Thermal- and 14-MeV-Neutron-Induced Fission of 235U

NUCLEAR REACTIONS 235U(n, F)121In/123In/125In/127In/128In/121Ag/121Cd/121Sn/123Sn/125Sn/127Sn/128Sn, E=thermal, 14 MeV; measured residuals yields following fission. Activation, continuous extraction methods.

RADIOACTIVITY 121,121m,123,123m,125,127,128In(β-) [from 235U(n, F), E=thermal, 14 MeV]; measured β-decay; deduced production yields for 121m,121Sn, 123,123mSn, 125,125mSn, 127Sn, 128Sn. On-line chemical separation, continuous extraction methods.

doi: 10.1103/PhysRevC.30.1966
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset12813.

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